[Shark413]

Trike, the stock Z-Car springs are way to soft and will adversely impact the handling of the buggy. Adding preload does not fix the issue, preload spacers are for adjusting ride height. You need to get the Z-Car stiff springs. Around here, Hobbypeople is out of stock, so I removed the stock shocks and added some spare Kyosho shocks I had. The buggy handles like a dream now.